Looks like a hotfix may be in order for Sony’s recently-issued PS3 firmware 3.56. Although merely a ‘security patch,’ users on various sites such as NeoGAF and HighDefForum are reporting that they can no longer swap the internal HDD for a upgraded one.

A wide range of PS3 models are affected, all of them with a 16MB NAND flash, which covers all newer slimline configurations. 256MB units are seemingly unaffected.

Here’s the complete breakdown:

* FAT NAND SIZE
o CECHA = 256MB
o CECHB = 256MB
o CECHC = 256MB
o CECHE = 256MB
o CECHG = 256MB
o CECHH = 16MB
o CECHJ = 16MB
o CECHK = 16MB
o CECHL = 16MB
o CECHM = 16MB
o CECHP = 16MB
o CECHQ = 16MB
* SLIM NAND SIZE
o CECH-20..A = 16MB
o CECH-20..B = 16MB
o CECH-21..A = 16MB
o CECH-21..B = 16MB
o CECH-250.A = 16MB
o CECH-250.B = 16MB
o CECH-250.A = 16MB
o CECH-250.B = 16MB
o CECH-251.A = 16MB
o CECH-251.B = 16MB

Here’s hoping Sony pushes out a fix soon.

Follow this author on Twitter.